Adaptation of single photon responses in photoreceptors of the housefly, Musca domestica: a novel spectral analysis.

abstract：:The apparent motion of a discretely displaced complex waveform with a periodic contrast modulation or "beat" of frequency f and sinusoidal components of frequencies 3f and 4f was examined at various interstimulus intervals (ISIs). At short ISIs perception of motion of both the beat and an aliased component of the wave...

journal_title：Vision research

authors： Hammett ST,Ledgeway T,Smith AT

更新日期：1993-05-01 00:00:00

abstract：:Age related changes in the dynamics of accommodation (far to near focus) and disaccommodation (near to far focus) are reported in this study. Dynamic responses to step stimulus demands from 1D to 6D, in 1D steps, were recorded with a PowerRefractor in 66 subjects in the age range 14-45 years. The accommodative and dis...

journal_title：Vision research

authors： Kasthurirangan S,Glasser A

更新日期：2006-04-01 00:00:00

abstract：:When participants can temporally prepare for a visual target stimulus, responses to this stimulus are faster and more accurate. Recent accounts attribute these effects either to an earlier accumulation of stimulus information or to an increased rate of information sampling. The present study examines whether temporal ...

journal_title：Vision research

authors： Bausenhart KM,Rolke B,Seibold VC,Ulrich R

更新日期：2010-06-01 00:00:00

abstract：:Small spots, lines and Gabor patterns can be easier to detect when they are superimposed upon similar spots, lines and Gabor patterns. Traditionally, such facilitation has been understood to be a consequence of nonlinear contrast transduction. Facilitation has also been reported to arise from non-overlapping patterns ...

journal_title：Vision research

authors： Solomon JA,Watson AB,Morgan MJ

更新日期：1999-03-01 00:00:00

abstract：:Existing models for the generation of saccades predict fixed trajectories between start and landing positions of saccades. Experimental data show that saccades have rather variable trajectories. The objective of the present research is to quantify the variability in trajectories of binocular saccades and to test in ho...

journal_title：Vision research

authors： Erkelens AJ,Sloot OB

更新日期：1995-12-01 00:00:00

abstract：:To understand the regulatory mechanisms governing glucocorticoid-mediated MYOC induction in human trabecular meshwork (HTM) cells, the expression and degradation of MYOC mRNA were quantified in HTM cells by Northern blot analysis, and the transcriptional activity of constructs containing variable lengths of putative M...

journal_title：Vision research

authors： Joe MK,Sohn S,Kim TE,Im JE,Choi YR,Kee C

更新日期：2011-05-11 00:00:00

abstract：:During free viewing visual search, observers often refixate the same locations several times before and after target detection is reported with a button press. We analyzed the rate of microsaccades in the sequence of refixations made during visual search and found two important components. One related to the visual co...

journal_title：Vision research

authors： Privitera CM,Carney T,Klein S,Aguilar M

更新日期：2014-02-01 00:00:00

abstract：:A new discrete-time reverse-correlation scheme for the study of visual neurons is proposed. The visual stimulus is generated by drawing with uniform probability, at each refresh time, an image from a finite set S of orthonormal images. We show that if the neuron can be modeled as a spatiotemporal linear filter followe...

journal_title：Vision research

authors： Ringach DL,Sapiro G,Shapley R

更新日期：1997-09-01 00:00:00

abstract：:A technique of multi-input systems analysis is used to explore the field topography of ERG responses to local luminance modulation. Variations in amplitude and wave form are studied within the central 23 degrees. Outside the fovea, the amplitude appears to follow a simple power law rx as a function of eccentricity r w...

journal_title：Vision research

authors： Sutter EE,Tran D

更新日期：1992-03-01 00:00:00

abstract：:A 3-D curvature contrast effect has been reported in shading-and-texture-defined (Curran & Johnson (1996). Vision Research 36, 3641-3653) and in stereoscopically defined (te Pas, Rogers, & Ledgeway (2000). Current Psychology Letters: Brain, Behaviour and Cognition 1, 117-126) stimuli. Our experiments show that a clear...

journal_title：Vision research

authors： te Pas SF,Kappers AM

更新日期：2001-12-01 00:00:00

abstract：:Contours are believed to play a key role in the visual analysis of scenes by the primate brain. In dynamic scenes, the presence of contours is often signaled by discontinuities in motion fields. However, it is unclear whether the motion fields over which the visual system extracts discontinuities, correspond to the lo...

journal_title：Vision research

authors： Sinha P

更新日期：2001-03-01 00:00:00

abstract：:We measured the three-dimensional shape and two-dimensional surface reflectance contributions to human recognition of faces across viewpoint. We first divided laser scans of human heads into their two- and three-dimensional components. Next, we created shape-normalized faces by morphing the two-dimensional surface ref...

journal_title：Vision research

authors： O'Toole AJ,Vetter T,Blanz V

更新日期：1999-09-01 00:00:00

abstract：:Is acetylcholinesterase (AChE) a reliable marker for cholinergic activity in the cat and rat retinas? To evaluate this question, radial sections, labeled for AChE, have been compared to sections labeled for choline acetyltransferase (ChAT). Within the inner plexiform layer (IPL) of each species, two lightly-stained AC...

journal_title：Vision research

authors： Criswell MH,Brandon C

更新日期：1993-09-01 00:00:00

abstract：:The present study showed that at equiluminance the critical duration of temporal integration became shorter as the chromatic saturation of an adaptation field was increased. These results suggest that the chromatic coding system (which is assumed to posses poorer temporal resolution or larger temporal integration time...

journal_title：Vision research

authors： Kawabata Y

更新日期：1994-04-01 00:00:00

abstract：:Three experiments of visual search for a cube (for a square pillar in Experiment 3) with an odd conjunction of orientation of faces and color (a cube with a red top face and a green right face among cubes with a green top face and a red right face, for example) showed that the search is made more efficient by arrangin...

journal_title：Vision research

authors： Morita H,Kumada T

更新日期：2003-08-01 00:00:00

abstract：:The effects of the involuntary ocular oscillations on visual resolution was examined in 22 albinos and 11 idiopaths with congenital nystagmus. The idiopaths showed a linear relationship between the proportion of the slow phase spent at low velocities (less than or equal to deg/sec) and the log of the minimum angle of ...

journal_title：Vision research

authors： Abadi RV,Pascal E

更新日期：1991-01-01 00:00:00

abstract：:Interocular transfer of the motion aftereffect (MAE) has been extensively investigated for the purpose of analysing the binocularity of the underlying motion mechanism. Previous studies unanimously reported that the transfer of the classical static MAE is partial, but there is a controversy as to whether the transfer ...

journal_title：Vision research

authors： Nishida S,Ashida H

更新日期：2000-01-01 00:00:00

abstract：:For being a polarized neuron and having a sensory cilium, photoreceptors attract remarkable attention. This is due their highly polarized structure and active visual signal transduction cascades and for the enrichment of complex networks of proteins in the cilium. Structural and functional maintenance of the photorece...

journal_title：Vision research

authors： Yildiz O,Khanna H

更新日期：2012-12-15 00:00:00

abstract：:Physiological and behavioral evidence shows that the directionally preponderant subcortical control of optokinetic nystagmus (OKN) in lower mammals is supplemented in higher mammals by bidirectional cortical control. It is hypothesized that this cortical control allows higher mammals to cope with the parallactic movem...

journal_title：Vision research

authors： Howard IP,Gonzalez EG

更新日期：1987-01-01 00:00:00

abstract：:There is ample psychophysical evidence that flicker is more salient in the peripheral than the central visual field, but the physiological basis of this eccentricity-dependant change is unclear. Here, we compared responsivity to temporal modulation of ganglion cells in central and peripheral primate retina. Above 30 H...

journal_title：Vision research

authors： Solomon SG,Martin PR,White AJ,Rüttiger L,Lee BB

更新日期：2002-12-01 00:00:00

abstract：:The topography of visual evoked potentials (VEP) is dependent on occipital lobe morphology. Using magnetic resonance imaging we examine the sulcal pattern (the calcarine and parieto-occipital sulci), and assess the size of the cuneus and the asymmetry of the occipital lobes, computed separately for its ventral and dor...

journal_title：Vision research

authors： Myslobodsky MS,Glicksohn J,Coppola R,Weinberger DR

更新日期：1991-01-01 00:00:00

abstract：:Edges are key points of information in visual scenes. One important class of models supposes that edges correspond to the steepest parts of the luminance profile, implying that they can be found as peaks and troughs in the response of a gradient (1st derivative) filter, or as zero-crossings in the 2nd derivative (ZCs)...

journal_title：Vision research

authors： Wallis SA,Georgeson MA

更新日期：2009-07-01 00:00:00

abstract：:Blurred images may appear sharper when drifting than when stationary. But, paradoxically, moving sharp edges may appear more blurred. To resolve this paradox, the perceived sharpness of drifting, blurred, square wave gratings was compared with that of their static analogues over a range of speeds, blurs and spatial fr...

journal_title：Vision research

authors： Hammett ST,Georgeson MA,Gorea A

更新日期：1998-07-01 00:00:00

abstract：:Cortical visual evoked potentials (VEPs) in response to gratings temporally modulated in counterphase were recorded in normal and dark-reared pigmented rats. Temporal modulation was either sinusoidal (0.25-15 Hz, steady state condition) or abrupt (0.5 Hz, transient condition). In normals, the amplitude spectrum of con...

journal_title：Vision research

authors： Pizzorusso T,Fagiolini M,Porciatti V,Maffei L

更新日期：1997-02-01 00:00:00

abstract：:Over the past years, knowledge has expanded with regards to the multiple roles played by erythropoietin (EPO) in the body. Once believed to be a hormone synthesised in the kidney and involved only in the modulation of erythrocyte production, it is recognised now that EPO can be produced in many tissues, including the ...

journal_title：Vision research

authors： Reid G,Lois N

更新日期：2017-10-01 00:00:00

abstract：:Neuroimaging studies have shown that the visual cortex of visually impaired humans is active during tactile tasks. We sought to determine if this cross-modal activation in the primary visual cortex is correlated with vision loss in individuals with retinitis pigmentosa (RP), an inherited degenerative photoreceptor dis...

journal_title：Vision research

authors： Cunningham SI,Weiland JD,Bao P,Lopez-Jaime GR,Tjan BS

更新日期：2015-06-01 00:00:00

abstract：:We have tested whether defocus imposed on local retinal areas can produce local changes in eye growth, even if accommodation is available to clear part of the imposed defocus. Hemi-field lenses were attached to little leather hoods that were worn by young chickens from day 11-15 post-hatching. The lens segments defocu...

journal_title：Vision research

authors： Diether S,Schaeffel F

更新日期：1997-03-01 00:00:00

abstract：:A dominant mechanism of cellular patterning in the growing fish retina is control of cell fate acquisition by negative feedback signals arising from differentiated cells. We tested the ability of a computational model of this pattern formation mechanism to simulate cellular patterns in regenerated goldfish retina. The...

journal_title：Vision research

authors： Tyler MJ,Cameron DA

更新日期：2007-02-01 00:00:00

abstract：:Characterization of the visual system as a linear system has many consequences. One property implied by such a characterization is that signal-to-noise ratio at threshold is constant, so that the contrast energy of a sinusoidal grating at threshold depends on the effective noise passed by the filter used to detect the...

journal_title：Vision research

authors： Perkins ME,Landy MS

更新日期：1991-01-01 00:00:00

abstract：:Recent work (Shimojo, Silverman & Nakayama, 1989; Vision Research, 29, 619-626) suggests that the visual system must discriminate between extrinsic boundaries (boundaries created by front occluding surfaces) and intrinsic boundaries (real object boundaries) in order to recognize objects and that this would importantly...

journal_title：Vision research

authors： Vallortigara G,Bressan P

更新日期：1991-01-01 00:00:00